A few days ago I wrote a post about how to use the generic property setter in order to set IsEnabled on a button. I got the question how to do it in 9.1.2. Unfortunately the M3List does not expose the CurrentItem property in 9.1.2 so for M3Lists I have no solution. But for lists using the M3 APIS (MIListPanel) and the DataListPanel you have the option of checking the SelectedValue of the list and use a converter that will change a not null value to true.
My example has a list of Countries and a button that will be disabled unless a row in the list is selected. Continue reading